In Supernatural season 7, episode 10, “Death’s Door” Bobby Singer had one of the most tragic deaths in the entirety of the show.

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Bobby wasn't originally a main character of Supernatural, but he became one of the most useful recurring characters on the show.

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In Supernatural season 7, episode 10, “Death’s Door,” Bobby Singer was shot as Sam and Dean fleed from the Leviathans.

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The Supernatural writers killed Bobby in the episode "Death’s Door" to shift the show's direction in a way that would most dramatically impact the characters and the audience.

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While Bobby Singer would appear several more times in the show after "Death's Door", he was always a ghost or an alternate Supernatural multiverse version of himself.

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